One-year outcome of patients after acute coronary syndromes (from the Canadian Acute Coronary Syndromes Registry).

Journal Article

The objective of this study was to determine the management and outcome of less [corrected] selected patients with an acute coronary syndrome during hospitalization and up to 1 year after discharge. The Canadian Acute Coronary Syndromes Registry was a prospective observational study of patients admitted with suspected acute coronary syndromes. Data on demographic and clinical characteristics, in-hospital treatment, and outcomes were recorded. At 1 year, vital status, medication use, recurrent cardiac events, and procedures were determined by telephone contact. Of the 5,312 patients enrolled, 4,627 had a final diagnosis of acute coronary syndrome, with Q-wave myocardial infarction in 27.7%, non-Q-wave myocardial infarction in 33.2%, and unstable angina pectoris in 39.1%. During hospitalization, coronary angiography and revascularization were performed in 39.6% and 20.3% of patients, respectively. The in-hospital mortality rate was 2.4% overall. At discharge, 87.8%, 76.4%, 56.0%, and 54.8% of patients were prescribed aspirin, beta blockers, angiotensin-converting enzyme inhibitors, and lipid-lowering agents, respectively. Unadjusted 1-year mortality rates for hospital survivors were 6.5%, 10%, and 5.4% for those with Q-wave myocardial infarction, non-Q-wave myocardial infarction, and unstable angina pectoris groups, respectively (p <0.0001). This difference in mortality rate remained significant after adjusting for other prognosticators, whereas the use of coronary angiography and revascularization after discharge was similar across patients. At 1 year, fewer patients were maintained on aspirin and beta blockers, whereas the use of lipid-lowering therapy increased (all p <0.0001). Despite similar rates of coronary angiography and revascularization after discharge, patients with non-Q-wave myocardial infarction had worse outcomes at 1 year. Moreover, there was a significant opportunity to enhance the discharge and long-term use of evidence-based secondary prevention therapies.

Full Text

Duke Authors

Cited Authors

  • Yan, AT; Tan, M; Fitchett, D; Chow, C-M; Fowlis, RA; McAvinue, TG; Roe, MT; Peterson, ED; Tu, JV; Langer, A; Goodman, SG; Canadian Acute Coronary Syndromes Registry Investigators,

Published Date

  • July 1, 2004

Published In

Volume / Issue

  • 94 / 1

Start / End Page

  • 25 - 29

PubMed ID

  • 15219503

Pubmed Central ID

  • 15219503

International Standard Serial Number (ISSN)

  • 0002-9149

Digital Object Identifier (DOI)

  • 10.1016/j.amjcard.2004.03.024


  • eng

Conference Location

  • United States